Burkert Type 2031 - Handbuch (Seite 17)

2030/2031 - 17
english
• Grease regularly over cover thread as on actuator body.
• Hold actuator on square of the actuator body.
• Fasten cover (Pos. 18) with special key.
• Align diaphragm:
Mark tab of diaphragm must be in 90° position to the flow direction.
• Put on valve body (Pos. 22)
• Fasten screws (Pos. 24) crosswise.
Caution!
Observe torque (see table)!
• Mount position indicator (Pos. 15) with Allen key.
• Screw-in transparent cap (Pos. 20).
• Examine valve for reliable operation and tightness.
Table: Seal kit
actuator Dn order no.
pps-actuator
order no.
pa-actuator
C 8 011 465 -
D 15 011 477 011 426
E 15, 20 011 488 011 440
F 20, 25 011 492 011 448
G 32, 40 012 127 012 125
H 40, 50 011 494 011 464
Table: Torque
orifice
(Diaphragm
size)
Dn [mm]
tightening torques for diaphragm
(approx. values) [Nm]
EPDM / FKM
PTFE / advanced PTFE /
laminated advanced PTFE
8 2,5 2,5
15 3,5 4
20 4 4,5
25 5 6
32 6 8
40 8 10
50 12 15
65 20 30